from collections import Counter

c1 = Counter(['a', 'b', 'c', 'a', 'b', 'b'])
c2 = Counter('alphabet')

print('C1: ', c1)
print('C2: ', c2)

print('\nCombined counts:')
print(c1 + c2)

print('\nSubtraction counts:')
print(c1 - c2)

print('\nIntersection (taking positive minimums):')
print(c1 & c2)

print('\nUnion (taking maximums):')
print(c1 | c2)
